VIENNA (Reuters) - Arab diplomats signaled on Tuesday they would seek to step up pressure on Israel over its assumed nuclear arsenal but the Jewish state said any attempt to "bash" it would be counterproductive.
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BERLIN (Reuters) - President Barack Obama wants to reduce deployed nuclear weapons by up to a third and revive negotiations with Russia to "move beyond Cold War nuclear postures", he said in a speech on Wednesday in Berlin.
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UNITED NATIONS (Reuters) - Years before he became Iran's president-elect, Hassan Rohani spoke approvingly about concealing his nation's nuclear program and said that when Pakistan got atomic bombs and Brazil began enriching uranium, "the world started to work with them."
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MOSCOW (Reuters) - Iran has taken constructive steps toward compromise in the decade-old standoff over its nuclear program and world powers should reciprocate, Russian Foreign Minister Sergei Lavrov said in remarks published on Tuesday.
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ENNISKILLEN, Northern Ireland (Reuters) - U.S. President Barack Obama and Russian President Vladimir Putin expressed "cautious" optimism on Monday that the election of a moderate cleric in Iran's presidential poll would open up dialogue with Tehran over its disputed nuclear program.
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Video

Rachel Maddow reports on a scandal surrounding the supervision of America's nuclear weaponry stored at Minot Air Force Base that has resulted in a slew of dismissals and further investigations into the "rot" within the ranks that has created this dangerous vulnerability.

In an exclusive TRMS report, Rachel Maddow reveals that at the end of March, the U.S. National Nuclear Security Administration removed the last of the highly enriched uranium from the Czech Republic as part of President Obama's plan to round up all of the world's loose nuclear material -a goal the N

If North Korea were to employ nuclear weapons, it would impact U.S. troops and pressure Japan and South Korea to also consider obtaining nuclear weapons – something that could lead to an all-out arms race. NBC’s Andrea Mitchell reports.

U.S. officials tell NBC News they believe North Korea does have the capability to put a nuclear weapon on a missile and that they have missile deliverable nukes. Those missiles, however, cannot go more than 1000 miles. NBC’s Richard Engel reports.

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A man takes a photograph of a giant lantern featuring the country's national treasure "Seokgatap," a traditional Buddhist pagoda, during a lighting ceremony in central Seoul April 23, 2013. The ceremony is held to celebrate the upcoming birthday of Buddha, which falls on May 17 in South Korea, and a

Buddhists hold lanterns during a lighting ceremony in central Seoul April 23, 2013. The ceremony is held to celebrate the upcoming birthday of Buddha, which falls on May 17 in South Korea, and also pray for peace in the Korean peninsula. North Korea demanded on Tuesday that it be recognized as a nuc

Buddhists sing a religious hymn during a lighting ceremony in central Seoul April 23, 2013. The ceremony is held to celebrate the upcoming birthday of Buddha, which falls on May 17 in South Korea, and also pray for peace in the Korean peninsula. North Korea demanded on Tuesday that it be recognized

A South Korean police stands guard on a rainy day in central Seoul April 23, 2013. North Korea demanded on Tuesday that it be recognized as a nuclear weapons state, rejecting a U.S. condition that it agree to give up its nuclear arms program before talks can begin. REUTERS/Kim Hong-Ji (SOUTH KOREA